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= 7
Lp = 2πr (r+t)
= 2 x 22/7 x 7 ( 7 +16)
= 44 ( 23)
= 1012 cm²
=vhi×(7+7)×(7+7)×t
=22/7×14×14×16
=44×14=616×16
=9856 cm²
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